On arbitrarily vertex decomposable trees

被引:12
作者
Hornak, Mirko [1 ]
Woiniak, Mariusz [2 ]
机构
[1] Safarik Univ, Inst Math, Kosice 04001, Slovakia
[2] Fac Appl Math AGH, Dept Discrete Math, PL-30059 Krakow, Poland
关键词
arbitrarily vertex decomposable tree; star-like tree;
D O I
10.1016/j.disc.2007.04.008
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
A tree T is arbitrarily vertex decomposable if for any sequence tau of positive integers adding up to the order of T there is a sequence of vertex-disjoint subtrees of T whose orders are given by tau; from a result by Barth and Fournier it follows that Delta(T) <= 4. A necessary and a sufficient condition for being an arbitrarily vertex decomposable star-like tree have been exhibited. The conditions seem to be very close to each other. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码:1268 / 1281
页数:14
相关论文
共 12 条
[1]   Packing circuits into KN [J].
Balister, P .
COMBINATORICS PROBABILITY & COMPUTING, 2001, 10 (06) :463-499
[2]   Packing closed trails into dense graphs [J].
Balister, PN .
JOURNAL OF COMBINATORIAL THEORY SERIES B, 2003, 88 (01) :107-118
[3]   A degree bound on decomposable trees [J].
Barth, D ;
Fournier, H .
DISCRETE MATHEMATICS, 2006, 306 (05) :469-477
[4]   Decomposable trees: a polynomial algorithm for tripodes [J].
Barth, D ;
Baudon, O ;
Puech, J .
DISCRETE APPLIED MATHEMATICS, 2002, 119 (03) :205-216
[5]   On a problem of partitions [J].
Brauer, A .
AMERICAN JOURNAL OF MATHEMATICS, 1942, 64 :299-312
[6]  
Cichacz S., 2006, Discussiones Mathematicae Graph Theory, V26, P291, DOI 10.7151/dmgt.1321
[7]   Decomposition of complete bipartite even graphs into closed trails [J].
Hornák, M ;
Wozniak, M .
CZECHOSLOVAK MATHEMATICAL JOURNAL, 2003, 53 (01) :127-134
[8]  
Hornak M., 2003, OPUSC MATH, V23, P49
[9]  
HORNAKM, IN PRESS TATRA MT MA
[10]  
HORNAKM, IN PRESS DISCRETE AP